body {
    margin: 0;
    padding: 0;
    /* background-color: #ccc; */
}

.conPbl {
    width: 1200px;
    margin: 20px auto;
    padding: 0 8px;
    column-count: 4;  
    column-gap: 40px;
}

.conPbl .boxpbl {
    width: 100%;
    margin: 0 0 20px;
    overflow: hidden;
    break-inside: avoid;
    border: 1px solid #ccc;
}

.conPbl .boxpbl img {
    max-width: 100%;
}

